body {
    font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, sans-serif;
    background-color: #f8f8f8;
    color: #333;
    margin: 0;
    padding: 0;
  }
  
  .container {
    max-width: 800px;
    margin: 40px auto;
    background-color: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    padding: 40px;
  }
  
  h1 {
    font-size: 26px;
    margin-bottom: 24px;
    color: #d9230f; /* 肯德基红 */
    text-align: center;
  }
  
  /* 表单样式 */
  .coupon-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
  }
  
  .coupon-form label {
    font-weight: bold;
    margin-bottom: 4px;
  }
  
  .coupon-form input,
  .coupon-form select {
    padding: 10px 12px;
    font-size: 16px;
    border: 1px solid #ccc;
    border-radius: 8px;
    outline-color: #d9230f;
  }
  
  .coupon-form button {
    margin-top: 12px;
    background-color: #d9230f;
    color: white;
    border: none;
    padding: 12px;
    font-size: 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s ease;
  }
  
  .coupon-form button:hover {
    background-color: #b81d0c;
  }
  
  /* 表格样式 */
  .coupon-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 15px;
  }
  
  .coupon-table thead {
    background-color: #d9230f;
    color: white;
  }
  
  .coupon-table th,
  .coupon-table td {
    padding: 14px 12px;
    text-align: center;
    border-bottom: 1px solid #eee;
  }
  
  .coupon-table tbody tr:hover {
    background-color: #f1f1f1;
  }
  
  /* 按钮样式 */
  .btn {
    padding: 6px 12px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
  }
  
  .btn.edit {
    background-color: #ffb400;
    color: white;
    margin-right: 6px;
  }
  
  .btn.edit:hover {
    background-color: #e09e00;
  }
  
  .btn.delete {
    background-color: #e74c3c;
    color: white;
  }
  
  .btn.delete:hover {
    background-color: #c0392b;
  }
  
  /* 成功 / 错误提示 */
  .success {
    color: green;
    margin-top: 12px;
    text-align: center;
  }
  
  .error {
    color: red;
    margin-top: 12px;
    text-align: center;
  }
  